ADM-860C 04/14/083
WARNING: Do not plug the charger in if any non-rechargeable batteries are in the meter. The meter will
be seriously damaged along with the batteries and charger.
The approximate level of charge remaining in the batteries may be displayed by pressing SHIFT/SHIFT.
The display will read BATT FULL if the batteries are highly charged. The display will read BATT 2/3, BATT
1/3, or LOCHARGE as the level of charge decreases.
NOTE: A battery charge level displayed when the meter is first turned on may not be representative of the
true level of battery charge. Wait five or ten minutes after turning the meter on to view the charge status.
BATTERY CHARGERS: The battery charger (P/N PS8201) used in the U.S.A. and many other countries
requires 120 Volts AC, 60Hz, 8W. The battery charger (P/N PS8202) used in Europe and certain other
locations requires 220 Volts AC, 50Hz. Both chargers deliver 24 Volts AC to the meter. Batteries may
be left on charge for an unlimited time without harm. The temperature of the instrument during charge
should be kept between 40
/ F and 113/ F (5/ C to 45/ C). The meter is fully operational during recharge.
OPERATIONAL TEMPERATURE LIMITS: The specified accuracy for measurements is maintained over a meter
exposure temperature range of 40
/ F to 140/ F (5/ C to 60/ C).
STORAGE TEMPERATURE LIMITS: -4/ F to 140/ F (-20/ C to 60/ C).
AIR BLEED: Each pressure measurement requires a small volume of air to pass through the meter. The
pressure source must be capable of supplying this volume without significant depletion to assure accurate
measurements. Bleed through is typically 0.0004 cubic inch per in wc per measurement. Quiescent bleed
through (maximum) is 0.0005 cubic inch per in wc per minute.
TUBING: The maximum recommended length of pneumatic tubing for the measurement of air flow, velocity, or
differential pressure is 18 feet. Minimum tubing size is 3/16 inch, inside diameter. The VelGrid is used with
the two eight foot lengths of 3/16 inch ID tubing furnished with the kit.
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